MAX3451EEUD+

Drivers, Receivers, Transceivers Overview

The MAX3451EEUD+ is a USB-compliant transceiver from the MAX3450E/MAX3451E/MAX3452E family, manufactured by Analog Devices Inc./Maxim Integrated. It interfaces low-voltage ASICs with USB devices and fully complies with USB 1.1 and USB 2.0 standards at full (12Mbps) and low (1.5Mbps) speeds. The device operates with a logic supply voltage (VL) ranging from +1.65V to +3.6V. Key electrical parameters include an operating supply current of 10mA for VBUS and 2.5mA for VL during full-speed transmission. It features integrated ±15kV ESD protection on D+ and D- lines. The part is housed in a 14-pin TSSOP package and supports an extended operating temperature range from -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Includes an internal 1.5kΩ pullup resistor connected to VTRM for automatic bus speed indication.
• Features an enumerate function that allows software-controlled logical disconnection from the USB bus while powered.
• Supports combined VP and VM inputs/outputs for flexible differential data interfacing.
• Provides logic-selectable suspend mode to reduce power consumption significantly.

Drivers, Receivers, Transceivers Applications

• Personal Digital Assistants (PDAs)
• PC Peripherals
• Cellular Telephones
• Data Cradles
• MP3 Players

Drivers, Receivers, Transceivers Procurement Notes

Verify the component authenticity by checking the top marking against the ordering information table in the datasheet. Confirm the package type matches the specified 14-pin TSSOP configuration. Ensure the suffix '+' indicates lead-free and RoHS compliance as documented. Cross-reference the manufacturer details with Analog Devices or Maxim Integrated records to validate the source.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring USB 1.1 or 2.0 compatibility with low-voltage ASICs. The internal pullup resistor simplifies circuit design for full-speed or low-speed enumeration. Consider the MAX3450E if pin compatibility with Micrel MIC2550A is required, or the MAX3452E if VBUS detection is necessary. Ensure the system power supply accommodates the specified voltage ranges for VL and VBUS.

Drivers, Receivers, Transceivers Part Context

The MAX3451EEUD+ belongs to the MAX3450E/MAX3451E/MAX3452E series of USB transceivers. These devices are designed to bridge low-voltage digital logic with USB physical layer requirements. The specific MAX3451E variant distinguishes itself through its built-in enumeration capabilities, allowing for dynamic device connection management without external resistors.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX3450E is pin-compatible with Micrel’s MIC2550A. For direct functional replacement within the same family, consider the MAX3450EEUD+ or MAX3452EEUD+, noting differences in internal pullup and bus-detect features respectively. Verify package and thermal characteristics match the existing design constraints.